Mill-pick



is a top vie-w.

UNITED STATES PATENT OFFICE.

JOEL A. WHEELER, or CLEVELAND, orno.

MILL-PICK.

Specification forming part of Letters Patent No. 44,570, dated October 4, 1864.

.To all whom it may concern:

Be it known that l, J. A. WHEELER, ot' Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Mill-Picks 5 and I do hereby declare the following to be a full and complete description of the construction and operation of the same, reference being made to the accompanying drawings, constituting a part of this specification, in which- Figure l is a side View of the pick. Fig. 2 Fig. 3 is a longitudinal section showing the internal arrangement and character ot the same, letters of like character referring to like parts in the several views presented.

My improvement relates to a mill-pick head so constructed that the blades or cutting parts ot' the pick are so held or secured to the head and handle that they can be worn entirely up without being sharpened by the blacksmith or removed from the head for the purpose of sharpening; secondly, the head, by its peculiar arrangement, holds the blades firmly in place, preventing any trembling or springing of the blades, and also any setting back of the blades into the head ot' the pick while being in use, making the pick thereby equal in solidity of action to a common old-fashioned pick; also, the ease and facility of removing and replacing the blades for any purpose necessary.

A A, Figs. l and 3, are the blades, passing into the head at the points B B, terminating at and resting against the shoulders C C, as shown in Fig. 3. These shoulders and the head, being iron and solid, prevent any back. ward action ot' the blades while being used. The head D, Figs. 1, 2, and 3, consists of two distinct parts, E being the upper, and is a kind ol lengthened shell or case, open on its inner side through its entire length, as indicated by the line F, Fig. 1.

G, Fig. 1, is the lower section of the head, litting into and lling the opening in the under side of the upper section of the head, as above described. The. extreme ends of thel lower section ofthe head meeting the extreme ends of the upper section at the points B B, as shown in Fig. 3, form together a strong and tirni clamp.

The blades on being placed between the two sections composing thehead are lirmly secured therein by the two parts being brought together by the iron screw H, Fig. 3. This screw is made to pass through the lower part of the head and screw into the upper part at the point I, thereby drawing or closing the two sections lirmly together, at the same time the two parts acting as a clamp whereby the blades are securely held in their respective places.

The inner end of the screw H terminates in a socket, J, Figs. 1,3, into which a wooden handle may be inserted for the convenience of those using the pick, the screw, it will be ob= served, answering as a portion of the handle.

Then the pick is worn up to the head, a short piece o f steel is placed a gainst -tlre shoulder, and by this means the blades may be shoved out and worn downto thelength of halt' an inch.

Nhat I claim as my improvement, and desire to secure by Letters Patent, is-

The head consisting of the parts D E F G, in combination with the screw-socket H J an l blades A A, when constructed and operating' in the manner and for the purpose set forth.

VVitnesses: JOEL A. WHEELER.

J. LEONARD, J. HOLMES. 

